Google Sign-In is a secure authentication system which reduces the burden of login for your users, by allowing them to login with their Google account. To sign users into an app that integrates Google+ features, Google Sign-In helps with social scopes

Regarding React.js + Ruby on Rails, especially the `react-rails` gem.

Neutron is an OpenStack project to provide "networking as a service" between interface devices.

Pushwoosh is a free(*) real time cross-platform push notification service for iOS, Android, BB, Windows, PhoneGap, Unity, Marmalade, Adobe AIR, etc. * with charges for advanced features or heavy usage.

a financial charge or other levy imposed upon a taxpayer (an individual or legal entity) by a state or the functional equivalent of a state to fund various public expenditures.

Jenkins supports the "Controller/Agent" mode, where the workload of building projects are delegated to multiple "agent" nodes, allowing a single Jenkins installation to host a large number of projects, or to provide different environments needed for builds/tests.

React renderer for creating PDF files on the browser and server

Web3py is a library for Python 3.7.2+ that is used for interacting with Ethereum. Use this tag for questions about using the web3py library in your code.

please use the [azure-machine-learning-service] tag instead!

This is the tag for information about the HERE Maps application developed by HERE Technologies. HERE Maps is a mapping software application. Use this tag to ask questions related to HERE Maps into your own web and mobile apps, retrieve map information such as addresses and coordinates, etc.

Kubernetes persistent volume claims: These are requested by pods in a cluster, from a storage pool that is pre-defined (or else, dynamically allocated).